Initializing help system before first use

problem.nlpAddFormulas

Purpose
Add non-linear formulas to the SLP problem.
Topic area
Problem Modification
Synopsis
problem.nlpAddFormulas(rowind, formulastart, parsed, type, value)
Arguments
rowind 
Integer array holding index of row for the coefficient.
formulastart 
Integer array holding the start position in the arrays type and value of the formula for the coefficients. formulastart[ncoefs] should be set to the next position after the end of the last formula.
parsed 
Integer indicating whether the token arrays are formatted as internal unparsed ( parsed=0) or internal parsed reverse Polish ( parsed=1).
type 
Array of token types providing the formula for each coefficient.
value 
Array of values corresponding to the types in type.
Further information
1. Formula is made up of a list of tokens in type and value starting at formulastart[j]. The tokens follow the rules for parsed or unparsed formulae as indicated by the setting of parsed. The formula must be terminated with an xpress.constants.TOK_EOF token. If several rows share the same nonlinear expression, they can have the same value in formulastart. For possible token types and values see the chapter on Formula Parsing in the Optimizer Reference Manual.
2. The add functions load additional items into the SLP problem. The corresponding load functions delete any existing items first.
3. The behaviour for existing formulas is additive: the formula defined in the parameters are added to any existing nonlinear expressions in the row. However, due to performance considerations, such duplications should be avoided when possible.
4. Argument rowind may contain xpress.constraint objects instead of indices.
Related topics
problem.nlpgetformulastr, problem.nlpAddFormulas, problem.nlpchgformulastr, problem.nlpchgformula, problem.nlpLoadFormulas, problem.nlpGetFormulaRows, problem.nlpgetformula, problem.nlpDelFormulas

Parent Topic Methods of the class problem

© 2001-2025 Fair Isaac Corporation. All rights reserved. This documentation is the property of Fair Isaac Corporation (“FICO”). Receipt or possession of this documentation does not convey rights to disclose, reproduce, make derivative works, use, or allow others to use it except solely for internal evaluation purposes to determine whether to purchase a license to the software described in this documentation, or as otherwise set forth in a written software license agreement between you and FICO (or a FICO affiliate). Use of this documentation and the software described in it must conform strictly to the foregoing permitted uses, and no other use is permitted.